Firewall (computing) and Secure Shell

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Difference between Firewall (computing) and Secure Shell

Firewall (computing) vs. Secure Shell

In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. The Secure Shell Protocol (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network.

Application layer

An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications network.

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Daemon (computing)

In multitasking computer operating systems, a daemon is a computer program that runs as a background process, rather than being under the direct control of an interactive user.

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File Transfer Protocol

The File Transfer Protocol (FTP) is a standard communication protocol used for the transfer of computer files from a server to a client on a computer network.

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Host (network)

A network host is a computer or other device connected to a computer network.

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List of TCP and UDP port numbers

This is a list of TCP and UDP port numbers used by protocols for operation of network applications.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

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Port (computer networking)

In computer networking, a port or port number is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service.

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Transmission Control Protocol

The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite.

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Transport layer

In computer networking, the transport layer is a conceptual division of methods in the layered architecture of protocols in the network stack in the Internet protocol suite and the OSI model.

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User Datagram Protocol

In computer networking, the User Datagram Protocol (UDP) is one of the core communication protocols of the Internet protocol suite used to send messages (transported as datagrams in packets) to other hosts on an Internet Protocol (IP) network.

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Virtual private network

Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).

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